The purple flair is normal, and shows up for me only when shooting directly into the sun that is well off the horizon. The flair is quite controlled and localized with out any contrast robbing haze. Considering the large front element, and potentially best performance of any lens in that focal length range, it is a small issue. Particularly when it also brings lens movements into the equation.

Thanks for your reply.It is a crop. All the sources of the flare is within the frame. I'll have to clone me out of it. I Just want to know if is is normal behavior for this lens or my copy that has an issue.